Insole



4, 1942- B. GUERRERO 2,292,070

INSOLE Filed Nov. 24, 1939 am: I

INVENTOR ATTO RN EYS Patented Aug. 4, 1942 UNlTED STATES PATENT OFFICE IN SOLE Bernardo Guerrero, Mexico City, Mexico Application November 24, 1939, Serial No. 305,984

3 Claims.

This invention relates to insoles for welted shoes, and its general object is to provide a multiple layer insole that is made up of light weight material to replace the one piece heavy thick sole now in general use, as well as to eliminate the usual objectionable metallic reinforcing means for the shank, as my insole includes 9, layer of leather reinforced by cement that hardens when it sets, to stiffen the shank thereof.

A further object is to provide an insole that eliminates channeling to unite the welt, as my insole includes a textile fabric strip cooperating with a flange formed from one of the layers to provide an inseam-receiving rib.

Another object is to provide an insole including a reinforced shank and which is primarily designed for ladies shoes to render the same flexible and light in weight, and the sole is simple in construction, inexpensive to manufacture, and exremely efficient in use and service.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure l is a bottom plan view of one form of my insole.

Figure 2 is a top plan view thereof with the upper layer broken away to illustrate the intermediate layers.

Figure 3 is a sectional view taken approximately on line 3-3 of Figure 1, looking in the direction of the arrows.

Figure 4 is a sectional view taken approximately on line 4-4 of Figure 1, looking in the direction of the arrows.

Figure 5 is a sectional view taken approximately on line 55 of Figure 4, looking in the direction of the arrows.

Figure 6 is a view of the lower layer of my insole.

Figure '7 is a view of the shank and heel reinforcing layer.

Figure 8 is a view of the fabric or canvas layer.

Figure 9 is a view of the upper layer.

Figure 10 is a bottom plan view of a slightly modified form of my insole.

Figure 11 is a view of the upper layer of the form of Figure 10.

Referring to the drawing in detail, and particularly to Figures 6 to 9, inclusive, the reference numeral 1 indicates the lower layer which is identical in both forms and provides the body of my insole, in that it is of full sole length to include forward, shank and heel portions 2, 3 and l respectively, and is of general sole shape, as clearly shown in Figure 6. The layer l is relatively thin, but is of the same thickness throughout its length, and is preferably made from some very inferior grade of leather, fiber or any suitable inexpensive material, to materially decrease the cost of manufacturing the insole.

The shank and heel reinforcing layer 5 is of half sole shape, and includes a shank portion 6 and a, heel portion 1, the shank portion having indentations or perforations 8 therein, arranged in rows transversely thereof for a portion of its length, and for a purpose which will be later described. The layer 5 as best shown in Figure 7, is preferably made relatively thick from a good grade of leather, and has a forward edge obliquely disposed with respect to the longitudinal axis of the insole, while its under surface is skived along the forward and side edges thereof to the heel portion 1, so that the shank portion 6 retains its original thickness along the longitudinal center portion, to adjacent its forward edge, as clearly shown in Figure l.

The upper or covering layer 9 of the form of Figures 1 to 5 inclusive is made of very thin flexible leather that preferably has its outer face glazed and its under face roughened or unfinished for receiving adhesive material. In any event, the layer 9 is of a length to extend from the front end of the lower layer to the heel portion 4 thereof and is of greater width than that of the forward and shank portions 2 and 3, but follows the outline shape thereof, as clearly shown in Figure 9.

The textile fabric or canvas layer It is of half sole shape and extends from the forward end of the layer 5 to the forward end of the layer I, and has its rear edge ll obliquely disposed with respect to the length of the insole, to fit the forwarg, edge of the layer 5, as best shown in Figure Secured to the under surface of the layer 1 to follow the edge thereof, and preferably by adhesive material and two rows if of stitching, is a strip [3 of textile fabric or canvas. Prior to stitching the strip l3 in position, it is folded along its longitudinal center to provide a double thickness of material, and the outer edge portion of the strip 13 is free and normally flush with the outer edge of the layer I, but when in use the free portion is bent outwardly for disposal at right angles to the layer l, as shown in Figures 3 to 5. The strip l3 of the form of Figures 1 to 5 is of a length to extend from the front end of the body I to the heel portion 4, as shown in Figure 1.

In assembling the layers to make up the complete insole, the canvas layer is adhesively secured to the upper surface of the forward portion 2 of the layer I to cover the rows I2 of stitching, thence the shank and heel reinforcing layer 5 is adhesively'secured to the remaining portion of the upper surface of the layer l. Finally the layer 9 is likewise a-dhesively secured to the layers Ill and 5 with sufficient cement to completely fill the perforations 8, as at M in Figure 4, and the cement or at least that which is used to fill the perforations is of a character that becomes stiff when it sets, so that the shank portion 6 will be substantially rigid, thus eliminating the use of metallic means for reinforcing the insole at the shank. Before the layer 9 is applied, the layer 5 may be heated to assure that the cement will flow into the perforations M, and completely fill the same.

Due to the fact that the layer 9 is wider than the other layers, it extends a considerable distance beyond the same, to provide a flange l5 that is folded over and adhesively secured to the edge portion of thebody I and the free portion of the strip l3, to provide an inseam-receiving rib 6. The flange is slit as at I! along portions of its length, and the portion of the flange forwardly of the slit portions is crimped as at l8, so that the crimped portion and the slit portions can be readily folded as set forth, and shown in Figure 1.

The form of Figures 10 and 11 is practically identical to the form of Figures 1 to 5, the only difference being that the fabric strip I9 is of a length to extend about the forward portion 29 only, of the lower layer 2|, and the upper layer 22 is of alength to extend to the shank portion of the shank and heel reinforcing layer which in this form is identical to that of the other form, as shown in Figure 7, while the flange 23 of the upper layer is of the same length as the strip I9 to cooperate therewith to provide a rib 24, for the same purpose as the rib 16.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is:

1. A multiple layer insole for shoes, comprising a lower layer of full sole length, a strip of fabric folded to provide a double thickness of material and stitched to the under surface of the lower layer to provide a, free portion following the edge thereof for a portion of its length, a shank and heel reinforcing layer secured to the upper surface of the lower layer and having its forward edge obliquely disposed with respect to the length of the insole, a canvas layer secured to the upper surface of the lower layer and having its rear edge abutting the forward edge of the shank and heel reinforcing layer so that the latter and the canvas layer cooperate with each other to completely cover the upper surface of the lower layer, an upper covering layer of relatively thin leather and of a Width greater than that of the lower layer to provide a flange extending about the edge of the lower layer and along the under surface thereof, and said flange being adhesively secured to the free portion of the strip to provide a rib.

2. A multiple layer insole for shoes, comprising a lower layer of full sole length and made from some inferior fiber material, a strip of fabric material secured to the under surface of the lower layer to provide a free portion following the shank thereof for a portion of its length, a shank and heel reinforcing layer formed from a good grade of leather and secured to the upper surface of the lower layer, said shank and heel reinforcing layer including a relatively thick heel portion and the shank portion having skived edges on the under surface thereof, means for reinforcing the shank portion to render the same stiff, an upper layer of a width greater than that of the lower layer to provide a flange extending about the edge of the lower layer and along the under surface thereof, and said flange being adhesively secured to the free portion of the strip to provide a rib.

3. A multiple layer insole for shoes, comprising a lower layer of full sole length, a shank and heel reinforcing layer secured to the lower layer and including a relatively thick heel portion and a perforated shank portion, a covering layer adhesivey secured to the upper surface of the shank and heel reinforcing layer and about the forward portion of the lower layer, and adhesive material filling the perforations and being of a character to harden when it sets to stiffen the shank portion to provide reinforcing means therefor.

B. GUERRERO. 

